HCS512/SO

Specialized ICS Overview

The HCS512/SO is a KEELOQ code hopping decoder in an 18-SOIC package. It operates on 4.0V to 6.0V with an external 4 MHz RC oscillator and features auto baud rate detection. The device securely stores the manufacturer's code and keys for up to four transmitters in on-chip EEPROM. It provides four binary function outputs representing 15 functions, supports normal and secure learning mechanisms, and includes a power-saving SLEEP mode.

Specialized ICS Feature Summary

• KEELOQ code hopping technology with secure storage of manufacturer’s code and transmitter keys
• Supports learning up to four transmitters using normal or secure learning mechanisms
• Generates four binary function outputs (S0-S3) indicating 15 distinct functions
• Features auto baud rate detection and a power-saving SLEEP mode

Specialized ICS Applications

• Automotive remote entry systems
• Gate and garage openers
• Electronic door locks

Specialized ICS Procurement Notes

Verify the 18-SOIC package dimensions and pinout compatibility during integration. Confirm that the system design accommodates the required 4 MHz external RC oscillator components. Ensure the programming interface connections are available if in-circuit configuration of the manufacturer's code is necessary.

Specialized ICS Selection Notes

Select this component for unidirectional remote keyless entry applications requiring high security. It is suitable for stand-alone decoding or microcontroller interfacing via parallel or serial interfaces. Verify encoder compatibility regarding PWM modulation format and 28-bit serial number requirements before implementation.

Specialized ICS Part Context

The HCS512 belongs to the Microchip KEELOQ family of logic ICs designed for secure access control. It serves as a dedicated decoder solution that simplifies the implementation of encrypted remote systems by handling all decryption and validation internally without complex firmware.

Specialized ICS Replacement Considerations

HCS512-P, HCS512-SN, HCS512-IP, HCS512-ISN.